Flat-bed printing press



July 17, 1923.

FLAT BED PRINTING PRESS Filed April 12 1922 2 sheets -sheeb 1 Juveni e):

GAM-

M. F. SLATTERY ET AL FLAT BED PRIN'IZ-ING PRESS July 17, 1923.

Filed April 12,

1922 2 Sheets-Sheet 2 Patented July 17, 1923.

UNITED STATES PATENT OFFICE.

MARTIN F. SLATTEEY AND HOWARD IVIQALONIE, OF GUI-ICES, NEW YORK.

FLAT- BED PRINTING PRESS.

' Application filed April 12, 1922. Serial No. 551,76.

To all whom it may concern:

Be it known that we, MARTIN F. SLATTERY and HOWARD McALoNm, citizens of the United States, residing at Cohoes, countyof Albany and State of New York, have invented certain new and useful Improvements in Flat-Bed Printing Presses, of

which the following is a specification.

Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein. This invention is applicable to flat-bed printing presses of various types in which the printed sheets are delivered to the delivery-bed Without inversion.

p In such machines the printed sheets are delivered to the delivery-bed by means of a delivery-carriage which moves to and fro above the bed, and a return movement of the delivered sheet due to the frictional or other influence of the delivery-carriage is prevented by stops which are intendedto intersect the return paths of the sheets.

In such machines it frequently happens that the delivery-carriage, after having delivered a sheet over the delivery-bed, by

I frictional, or other influence, tends to cause said sheet to accompany the carriage on its return movement, bringing the sheet with considerable force against said stops, causing the sheet to be jammed and buckled upwardly and requiring the stoppage of the press to remove said sheet-which is necessarily damaged and rendered useless by hein; so jammed and buckled.

The object of the present invention is to overcome any tendency of the delivery-can riage to withdraw on its return movement a sheet which it has placed over or upon the delivery-bed by its forward movement.

. Other objects will appear in connection with the following description.

Fig. 1 of the drawings is a view in side elevation of the main parts of a complete flat-bed printing press to which our invention has been applied.

Fig. 2 is a view partly in side elevation and partly in section ofour improved telescoping feed-guard with the members of the guard mounted by suitable bearings upon the cross-rods or shafts whereby they are supported in the machine in use.

Fig. 3 is atop plan view of the same.

Fig. 4 is a vertical cross-section taken on the broken line 4Et in Fig. 2.

Fig. 5 is a horizontal cros's-sectiontaken on the brokenline 5-5 in 2. i

Fig. 6 is a vertical section taken on the broken line 66 in Fig. 2. x

Fig. 7 isahorizontalsection taken on the broken line 77 in Fig. 2.

In the drawings we have shown the invention applied to a well known type of flatbed printing press. 1 is the frame of the press, havinga feed-table, 2, and from the cylinder, 3, of which press the printed sheets are delivered upon endless belts or deliverytapes, 4-, one of which is shown in Fig. 1.

The sheets delivered upon the tapes, 4, are carried forward until they are engaged by the feed-carriage, 5, by which the delivery of the sheets to the delivery-bed, 6, i

is accomplished.

The feed-carriage, 5, is actuated by means of a toggle formed in part by a link, 7, and a rocker-arm, 8, the rocker-arm being mountedupon a rock-shaft,9, in the usual manner.

The means for operating the deliverycarriage, 5, are duplicated on opposite sides of the machine.

Stops, 10, automatically moved along the are, 11, to and from a vertical position in the operation of the machine tend to prevent the delivered printed sheet from accompanying the delivery-carriage, 5. in its return movement, said stops, 10, being automatically moved from vertical to horizontal position so as not to interfere with the delivery movement of the printed sheets.

As the mechanisms above referred to are old and well understood in the art, further description of the same is deemed unnecessary.

In applying our invention to a press of the typedescribed, we employ a telescoping delivery-guard comprising a tubular member, 12, and a rod-member, 13, telescoping within the tubular member as shown in Fig. 2. v

The tubular members, 12, are mounted upon a shaft, 14, which shaft is mounted upon the frame, 1, of the machine; and in the type of machine shown has no movement.

The several rod-members, 13, are mounted upon a shaft, 15, which shaft is rockabl mounted upon the delivery-carriage, 5.

The rod-members, 13, are severally mountloo ed upon the cross-shaft, 15, each means of a slotted or bifurcated collar, 16, on said shaft, and a collar, 17, mounted on said shaft within the slot or bifurcation in the collar, 16, the collar, 17, being fixed upon the shaft by means of a screw, 18, while the slotted or bifurcated collar, 16, is rotatory upon said shaft.

The end of the rod-member, 13, is upturned as at 19, and clamped to thecollar, 16, by means of a screw, 20, as shown in Fig. 7.

This construction causes the rod-member, 13, to reciprocate longitudinally in accordance with the t0andfro movement of the delivery-carriage, 5, without interfering with the rocking movement of said shaft, 15.

As the delivery-carriage, 5, travels to and fro, the rock-shaft, 15, being in a lower plane than the shaft, 14, the angle of downward inclination of the delivery-guard, 12, 13, will be constantly changing during the movements of the delivery-carriagc,

V e therefore mount the tubular members, 12, severally upon the shaft, 14, with provision for such movement.

. The means whereby the tubular members, 12, are thus mounted upon the shaft, 14, comprise a slotted or bifurcated collar, 21, rotatively mounted upon the shaft, 14, and a collar, 22, mounted upon theshaft, 11-, within the bifurcation or slot in the collar, 21, by means of a screw, 23. I

The tubular member, 12, is clamped between jaws, 24, on the slotted collar, 21, by means of a screw-bolt, 25.

The slotted collar, 21, is thus free to rock upon the fixed shatt, 14-.

The rod-member, 13, is preferably formed with a forwardly extending loop, 26, which may be extended as far as necessary to accomplish the purposes of the invention.

The operation of the machine is as follows:

Each printed sheet is delivered from the cylinder, upon the upper stretch of the tapes or belts, 4, and beneath the several tubular members, 12, of our delivery-guard mechanism. Each sheet is carried by the belt or tape, 1, forwardly to the point where it is engaged by the dcli'verycarriage, 5, which carries the sheet over the deliverybed, 6, and deposits the sheet thereupon.

From the point where the sheet being delivered is covered, and guarded by the tubular member, 12. of our device, it continues to be covered and guarded. by the rod-mem ber, 13, of our device to a point well over the deliveiy-bed, 6. Upon the return movement of the carriage, should it tend to cause the delivered sheet to return with it, such return would be prevented by the steps, 10, in the usual manner, but if such a tendency were so strong as to jam or buckle the sheet, such jamming or buckling would be possible for delivered sheet whose return is prevented by engagement of the stops, 10, from rising or buckling, or causing a jam.

By having the end, 19, of the rod-member, 13, offset at right angles as shown, provision is made for a vertical adjustment of the guard, 12, 13, to best adapt it for the accomplislnnent of its purpose.

As the delivery-carriage, 5, moves to and fro in delivering the sheets as above described, the rod-member, 13, will telescope within the tubular member, 12, tov whatever degree may be necessary.

N c haveshown and described our invention in its preferred application to a well known type of flat-bed printing press, but with immaterial changes the device can be adapted for various other types or fiat-bed printing presses having a straight-delivery mechanism, whereby the sheets are delivered without inversion as in a flydelivery-press.

A number of the printed sheets are shown at 28, some resting upon the delivery-bed or table, 6, and one being delivered on top of the pile on said bed or table.

hat we claim asnew and desire to se cure by Letters Patent is: i

1.111 a printing press having acylinder, and a delivery-bed, the combination with sheet-delivery mechanism for transferring a printed sheet from the cylinder to the delivery-bed; ot' sheetguarding mechanism overhanging the path of the delivered sheet from a point above the deliverybcd to a point adjacent to said cylinder, said sheetguarding mechanism being automatically extensible and contractible in the operation of the press.

2. In a printing press of the scribed having a printing cylinder and a delivery-bed, the combination with sheet-delivery mechanism for transferring a printed sheet from the cylinder to the delivery-bed; of sheet-guarding mechanism overhanging the path of the delivered sheet from a point above the delivery-bed to a point adjacent to said cylinder, said sheetguarding mechanism including telescoping members one of which is connected. with a movable member of the sheet-feeding mechanism.

3. In. a printing press of the class described having a cylinder and a deliverybcd, the combination with delivery-tapes for delivering the printed sheets from the cylinder part-way to the delivery-bed; and a delivery-carriage for completing the delivery of the sheets to the delivery-bed; of sheetclass deguarding mechanism including-telescoping members, one mounted upon the machine adjacent to the cylinder and the other livery-carriage for completing the delivery of the sheets to the delivery-bed, said delivery-carriage having a cross-shaft; of sheet guarding mechanism including telescoping members above the path of the delivered sheets, one mounted upon the machine adjacent to the cylind'erand the other mounted upon said cross-shaft on the deliverycarriage.

5. In a printing press of the class de scribed having a cylinder and a deliverybed, the combination with means for delivering the printed sheets from the cylinder to the delivery-bed, said means including a delivery-carriage having a rock-shaft; of sheet-guarding mechanism including telescoping members overlying the path of the delivered sheets, one otsaid members be- I ing rockably mounted adjacent to said cylinder, and the other being connected with said rock-shaft on the delivery-carriage.

6. In a printing press having a cylinder, and a delivery-bed, the combination with sheet-delivery mechanism for transferring a printed sheet from the cylinder to the delivery-bed; of sheet-guarding mechanism overhanging the path of the delivered sheet from a point above the delivery-bed to a point adjacent to said cylinder, said sheetguarding mechanism being automatically extensible and contractible in the operation of the press and stops in the path of a return movement of a delivered sheet.

7.'In a printingpress of the class described having a cylinder and a deliverybed. the combination with sheet-delivery mechanism for transferring a printed sheet from the cylinder to the delivery-bed; of sheet-guarding mechanism overhanging the path of the delivered sheet from a point above the delivery-bed to a point adjacent to said cylinder, said sheet-guarding mechanism including telescoping members one of? which isconnected with a movable member of the sheet-feeding mechanism; and stops in the path of a return movement of a delivered sheet.

8. In a printing press of the class described having a cylinder and a deliverybed, the combination with delivery-tapes for delivering the printed sheets ironithe cylinder part-way to the delivery-bed; and a delivery-carriage tor completingthe de-- livery of the sheets to the delivery-bed; of sheet-guarding mechanism including telescoping members, one mounted upon the machine adjacent to the cylinder, and the other mounted upon said delivery-carriage; and stops in the path of a return movement or: a delivered sheet. U v

.9. In aprinting press of the class described having a cylinder and a deliverybed, the combination with delivery-tapes for delivering the printed sheets from the cylinder part-wayto the delivery-bed; and a delivery-carriage for completing the delivery ofthe sheets to the delivery-bed, said delivery carriage having a cross-shaft; of sheet-guarding mechanism including telescoping members above the path of the delivered sheets, one mounted upon the ma chine adjacent to the cylinder and the other mounted upon said cross-shaft on the delivery-carriage; and stops in the path of a return movement of a delivered sheet.

10. In a printing press of the class described having a cylinder and a delivery bed, the combination with means for delivering the printed sheets from the cylinder to the delivery-bed, said means including a delivery-carriage having a rock-shaft; of sheet-guarding mechanism including telescoping members overlying the path of the delivered sheets, one of said members being rockably mounted adjacent to said cylinder.

and the. other being connected withsaid rock-shaft on the delivery-carriage; and stops in the path of a return movement of a delivered sheet.

11'. In a printing press oft-he class described having a cylinder and a deliverybed, the combination with delivery-tapes for delivering the printed sheets from the cylinder partway to the bed; and a delivery-carriage for completing the delivery of the sheets to the delivery-bed; of sheet-guarding mechanism including telescoping members above the path of the delivered sheets, one mounted upon the machine adjacent to the cylinder, and the other having an upwardly offset end; and means for securing said upwardly offset end to the delivery-carriage in different positionsof vertical adjustment.

12. In a printing press of the class described having a cylinder and a delivery bed, the combination with delivery-tapes. for delivering theprinted sheets from the cylinder part-way to the delivery-bed; and

a delivery-carriage for completing the de-' livery of the sheets tothe delivery-bed; of sheet-guarding mechanism including tele scoping members above the path of the dc livered sheets, one mounted upon the ma chine adjacent to the cylinder. and the other being connected with said delivery-carriage,

and having a loop extending beyond its point of connection with said carriage. j

13. In printing press having a cylinder and a delivery bed, the combination with sheet delivery mechanism, having a movable &

member, for transferring a printed sheet from the cylinder to the delivery bed; of sheet-guarding mechanism overlying the path of the delivered sheet from a point 5 above the delivery bed to a point adjacent to said cylinder, said mechanism being extensible and contractible; and a connection between said movable member of the sheetdelivery mechanism and said sheet-guarding mechanism whereby the latter is auto- 10 matically extended and contracted.

In testimony whereof, We have hereunto set our hands this 8th day of April, 1922.

MARTIN F. $LATTERY; HOl/VARD MGALONIE. 

